Understanding the rock slope stability along Malshej Ghat, India, using rock mass characterisation and block shape classification techniques

IF 1.3 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY Journal of Earth System Science Pub Date : 2024-04-17 DOI:10.1007/s12040-024-02284-5

Saurabh Prakash Aher, Durga Prasanna Mohanty, Pranay Vilas Bhapkar, Sarada Prasad Pradhan, Vikram Vishal

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Abstract

Malshej Ghat is one of the busiest transport corridors in Maharashtra. It is highly prone to landslides, as the region receives heavy precipitation and steep slopes along the road section. This manuscript focuses on the applicability and reliability of block size and shape classification techniques in the assessment of the stability of the road-cut rock slopes. Structurally weak zones extending along and across the road section are identified as a lineament, and accordingly, slopes are chosen for in-depth analysis. Kinematic analysis signifies that wedge failure is observed to be the most common type of failure, while planar and toppling failures are observed at places. The rock blocks which are produced as a result of the intersection of different joint sets are mainly cubic, cubic-elongated and elongated in shape, whereas platy, platy-cubic and elongated-platy blocks are very less in proportion. Volume and surface area of rock blocks play a vital role in the movement of the blocks. The rock mass is observed to be nearly poor to fair in quality; however, the numerical simulation shows that the slopes MRS-1, MRS-5, and MRS-7 are critically stable.

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利用岩体表征和岩块形状分类技术了解印度 Malshej Ghat 沿线岩石斜坡的稳定性

Malshej Ghat 是马哈拉施特拉邦最繁忙的交通要道之一。该地区降水量大，沿路段山坡陡峭，极易发生山体滑坡。本手稿的重点是块体大小和形状分类技术在评估路面岩石斜坡稳定性方面的适用性和可靠性。沿路段和横跨路段延伸的结构薄弱区被确定为线状，并相应地选择斜坡进行深入分析。运动学分析表明，楔形破坏是最常见的破坏类型，而平面破坏和倾覆破坏也时有发生。不同节理组交汇产生的岩块主要呈立方体、立方体-拉长形和拉长形，而板状、板状-立方体和拉长-板状岩块所占比例很小。岩块的体积和表面积对岩块的移动起着至关重要的作用。据观察，岩块的质量几乎处于较差到一般的水平；然而，数值模拟显示，斜坡 MRS-1、MRS-5 和 MRS-7 非常稳定。

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来源期刊

Journal of Earth System Science Earth and Planetary Sciences-General Earth and Planetary Sciences

CiteScore

3.20

自引率

5.30%

发文量

226

期刊介绍： The Journal of Earth System Science, an International Journal, was earlier a part of the Proceedings of the Indian Academy of Sciences – Section A begun in 1934, and later split in 1978 into theme journals. This journal was published as Proceedings – Earth and Planetary Sciences since 1978, and in 2005 was renamed ‘Journal of Earth System Science’. The journal is highly inter-disciplinary and publishes scholarly research – new data, ideas, and conceptual advances – in Earth System Science. The focus is on the evolution of the Earth as a system: manuscripts describing changes of anthropogenic origin in a limited region are not considered unless they go beyond describing the changes to include an analysis of earth-system processes. The journal''s scope includes the solid earth (geosphere), the atmosphere, the hydrosphere (including cryosphere), and the biosphere; it also addresses related aspects of planetary and space sciences. Contributions pertaining to the Indian sub- continent and the surrounding Indian-Ocean region are particularly welcome. Given that a large number of manuscripts report either observations or model results for a limited domain, manuscripts intended for publication in JESS are expected to fulfill at least one of the following three criteria. The data should be of relevance and should be of statistically significant size and from a region from where such data are sparse. If the data are from a well-sampled region, the data size should be considerable and advance our knowledge of the region. A model study is carried out to explain observations reported either in the same manuscript or in the literature. The analysis, whether of data or with models, is novel and the inferences advance the current knowledge.